During President Obama’s terms, coal mines continually lost money and had to lay off miners. Therefore, President Obama was responsible for the coal mines loss of money and jobs.
Where do you think this argument goes wrong? You don’t need to know the technical name for it, but just identify the problem. Please note: you shouldn’t have to know anything about the facts of this situation (i.e. you don’t need to know about coal profits or policies on mining); you should be able to detect the problem with this argument without reference to any of the specifics.